Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C321/00—Thiols, sulfides, hydropolysulfides or polysulfides
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
  • C07C205/49—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by carboxyl groups
  • C07C205/56—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by carboxyl groups having nitro groups bound to carbon atoms of six-membered aromatic rings and carboxyl groups bound to acyclic carbon atoms of the carbon skeleton
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
  • C07C59/125—Saturated compounds having only one carboxyl group and containing ether groups, groups, groups, or groups
  • C07C59/135—Saturated compounds having only one carboxyl group and containing ether groups, groups, groups, or groups containing halogen
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
  • C07C59/40—Unsaturated compounds
  • C07C59/58—Unsaturated compounds containing ether groups, groups, groups, or groups
  • C07C59/64—Unsaturated compounds containing ether groups, groups, groups, or groups containing six-membered aromatic rings
  • C07C59/66—Unsaturated compounds containing ether groups, groups, groups, or groups containing six-membered aromatic rings the non-carboxylic part of the ether containing six-membered aromatic rings

Definitions

• the compounds belonging to class (I) not only have a high activity against the winter eggs of mites and insects in treatments carried out in winter, but are also active against adult mites and against their summer eggs.
• the compounds of this class are scarcely active against other phytofagous insects. In other words, they have a selective action and act selectively only against some species and not against others.
• the compounds which are the objects of the present invention are prepared by esterification of beta-fluoroethyl alcohol with the acids corresponding to the different meaning of R .by operating as indicated by the known technique.
• beta-fluoroethyl ester of diphenylacetic acid (also referred to hereinbelow 'as M2060) may be obtained according to one of the following preferred procedures:
• CHz-COONB 36 g. of 45.5% sodium hydroxide are added to 87 g. of diphenylacetic acid suspended in 400 cc. of water.
• 72.8 g. of beta-fluoroethyl ptoluenesulfonate (prepared according to Millington & Pattison-Can. J. Chem., 34, 1532 10 (1956)) are added and the whole is then refluxed for 5 hours. The reaction mixture is cooled, the precipitate is filtered off and carefully washed with water.
• the mixture is heated to the boiling point, while the water formed during the reaction is removed by distillation of the azeotropic mixture of benzene/water.
• the reaction mixture is cooled, washed with H O, then with a diluted Na CO solution and fiinally again with water. By evaporating off the benzene solution under reduced pressure, a residue of 72 g.
• the ester can be purified by crystallization or evaporation under high vacuum.
• EXAMPLE 1 The following substances are charged in a /z-liter flask provided with an agitator, a thermometer and a dropping funnel:
• EXAMPLE 3 33.6 g. of phenylthioglycolic acid are added to 70 cc. of beta-fluoroethyl alcohol, and gaseous hydrochloric acid is bubbled for about 15-20 minutes till saturation, while cooling with water. The mixture is kept in a closed vessel for 4 days and then under vacuum while mildly heating in order to remove most of the alcohol excess. 70 cc. of methylene chloride are added and the whole is poured into 30 cc. of water. The product is washed with 50 cc. of a diluted aqueous NaHCO solution tilll neutral pH, sepahereinbelow indicated as M1992.
• EXAMPLE 4 The following substances are introduced into a /2-liter flask provided with a device for the azeotropic elimination of the reaction water:
• Beta-naphthylacetic acid g 50 Benzene cc 200 p-Toluenesulfonic acid g 46.2 Fluoroethyl alcohol g 30.6
• EXAMPLE 5 The following substances are introduced into a /2liter flask provided with a device for the azeotropic elimination of the reaction water:
• the mixture is stirred and refluxed until the water is completely removed. After cooling to room temperature, it is Washed twice with 200 cc. of H 0, then with 160 cc. of 5% Na CO and finally twice again with 200 cc. of water.
• the organic layer is evaporated under a residual pressure of mm. (30-40 C.).
• Beta-naphthoxyacetic acid g 40.5 Benzene cc 150 Fluoroethanol g 23 The mixture is stirred and refluxed until H O is eliminated. After cooling to room temperature, it is first washed twice with 250 cc. of water, then 'with cc. of 5% Na CO and finally twice again with 250 cc. of H 0. The solution is then evaporated under reduced pressure to a constant weight at 30-40 C. The residue consists of 47 g. of a thick oil which is subjected to vacuum distillation (boiling point at 0.8 mm. Hg 146148 C.) and gives about 40 g. of the beta-fluoroethyl ester of beta-naphthoxyacetic acid in the form of a solid having a low melting point:
• EXAMPLE 7 The following substances are introduced into a /2-liter flask provided with a device for the azeotropic elimination of the reaction water:
• EXAMPLE 8 The following substances are charged into a /z-liter flask provided with a device for the azeotropic elimination of the reaction :water:
• EXAMPLE 10 The following substances are charged into a /i-liter flask provided with a device for the azeotropic elimination of the reaction vwater:
• formulations of various types can be prepared:
• Powder formulations can be prepared by intimately mixing the active substances with inert fillers or diluents such as kaolin, talc, attapulgite, sepiolite, diatomaceous earths, artificial silicates, etc.
• inert fillers or diluents such as kaolin, talc, attapulgite, sepiolite, diatomaceous earths, artificial silicates, etc.
• a surfactant or with a mixture of surfactants which may be selected from the group of the condensation products of ethylene oxide with alkylphenols or with higher aliphatic alcohols or from the group of calcium or sodium alkylbenzene (naphthalene) sulfonates, to prepare so-called wettable powders, i.e., formulations that are added to water in order to obtain suspensions employable for the disinfestation by means of spraying; and
• Liquid formulations which form emulsions in water can be prepared by addition of a surfactant or of a mixture of surfactants that may belong to the abovementioned groups, to a solution of the active substances in a solvent.
• Liquid formulations on the basis of mineral oils associated with wetting emulsifiers and cosolvents, containing the compounds of the present invention, can usefully be employed, dispersed in water, in the treatment of plants infested by the pests.
• compositions have been prepared by dissolving 20 parts of a compound of the present invention (such as, e.g., M2060, M2432, M2433, M2459) in parts of xylene, adding to the solution 5 parts of a 50/50 mixture of calcium dodecylbenzenesulfonates and of the condensation product of ethylene oxide and nonylphenol. All parts are by weight.
• the amount of formulation necessary to obtain the desired concentration of active substances is added to water while stirring. The emulsion obtained is sprayed onto the plants and the parts of plants infested by the pests.
• Mineral oil formulations particularly suitable for winter treatments, containing 2% of M2060 (or another of the aforementioned compounds), 75% of mineral oil (having a content of unsulfonable oil of 67-70% and a viscosity at 20 C. of 6.4g), 15% of xylene and 8% of a commercial emulsifier consisting of a mixture of ethoxylatednonylphenol and of ethoxylated oleic acid, are prepared by mixing all the components until a clear solution is obtained.
• Formulations of the wettable powder type containing 20% of a compound belonging to the class described herein, e.g., M2060, M2432, M2433, M2459, 74% of diatomaceous earths, 4% of sodium oleylmethyltaurinate, 1% of sodium butylnaphthylenesulfonate and 1% of naphthylmethondisulfonate, are prepared by intimately mixing the components of the formulations and grinding the mixture until the desired fineness is obtained.
• the compounds of the present invention are particularly suitable for the control of mites and insects preferably with applications when the phytofagi are in the stage of eggs. These compounds have also an effective action against adult mites and summer eggs on which they act either directly by spraying or indirectly (residual effect).
• the compounds of our invention are, therefore, more effective for the control of eggs of mites and insects than those commonly used till now.
• Another object of our invention is to provide means particularly eifective and useful for the disinfestation of plants from winter eggs of mites and insects, while still another object is to provide means which couple the activity against winter eggs with the activity against the other life stages of mites so as to represent means for the complete control of these pests.
• EXAMPLE 11 Activity against winter eggs of mites (Metatetranychus ulmi) The determination of the activity on winter eggs was made On apple twigs infested with winter eggs of Metatetrarzychus ulmi. After spraying the twigs in laboratory with the active substances in aqueous emulsion, the twigs were kept in the open air under natural conditions until the beginning of spring, i.e., when the results were determined. To evaluate the results, a number of visibly vital eggs had been marked on each twig and after the hatching of non-treated eggs used as a control. The number of unhatched eggs was counted.
• the results were determined on the eggs and not on the mites population deriving therefrom: i.e., it was ascertained exclusively the ovicidal effect (inhibition of the hatching of the eggs) without taking into account the possible action of the products on the new-born acari.
• an appreciable percentage of non-treated eggs appeared altered due to predators and other natural non-established causes. This phenomenon involved a higher percentage of eggs (up to a maximum of about 20%) the longer the interval between the determination of the situation before the treatment and the determination of the results.
• the acaricidal activity on adults was determined by direct spraying on discs of apple leaves;
• the ovicidal activity was determined by infesting discs of apple leaves with female adults; after 24 hours, the females are removed and the discs with the eggs are sprayed with formulation containing the active substances and kept at 24-26 C. in open Petri dishes until a few days after the hatching'date of the checks.
• the ovicidal activity by residual effect was determined by spraying, with formulations containing the active substances, the discs taken from apple leaves. After 2 hours the females were transferred onto these discs, kept on wet cotton in covered Petri dishes, and were left to lay the eggs on the treated surface of the leaves. After 24 hours, the females were removed. The percentage of hatched eggs is calculated after the hatching of the eggs laid on non-treated discs used as a check.
• Fac( o o Tedion 1 Strain resistant to the action of Fac 2 Isopropylamide 0t 0,0-diethyldithiophosphorylacetic acid. 3 2,4-5,4-tetrachlorodiphenylsulfone.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

Applications Claiming Priority (3)

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Cited By (2)

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• 0
  • NL NL127671D patent/NL127671C/xx active
• 1964
  • 1964-12-01 NL NL6413943A patent/NL6413943A/xx unknown
  • 1964-12-02 IL IL22547A patent/IL22547A/xx unknown
  • 1964-12-02 GB GB49013/64A patent/GB1047097A/en not_active Expired
  • 1964-12-05 DE DE1693169A patent/DE1693169C3/de not_active Expired
  • 1964-12-08 US US416919A patent/US3436418A/en not_active Expired - Lifetime
  • 1964-12-10 BR BR165192/64A patent/BR6465192D0/pt unknown
  • 1964-12-11 BE BE656979A patent/BE656979A/xx unknown
  • 1964-12-11 CH CH1603764A patent/CH474953A/it not_active IP Right Cessation
• 1965
  • 1965-08-27 CS CS5302A patent/CS152421B2/cs unknown

Non-Patent Citations (1)

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